Navigation system and method for tracking objects using optical and non-optical sensors
First Claim
Patent Images
1. A navigation system comprising:
- a localizer;
a tracker for communicating with said localizer and including three markers and a non-optical sensor; and
a computing system having at least one processor configured to;
determine positions of each of said markers based on optical and non-optical signals,determine if one or more of said markers is blocked from line-of-sight with said localizer to create a blocked condition,track a time of the blocked condition,determine a position error tolerance associated with the one or more blocked markers,determine a position error associated with the one or more blocked markers based on the time of the blocked condition,determine if the position error is within the position error tolerance, andplace the navigation system in an error condition if the position error exceeds the position error tolerance.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods that utilize optical sensors and non-optical sensors to determine the position and/or orientation of objects. A navigation system includes an optical sensor for receiving optical signals from markers and a non-optical sensor, such as a gyroscope, for generating non-optical data. A navigation computer determines positions and/or orientations of objects based on optical and non-optical data.
219 Citations
14 Claims
-
1. A navigation system comprising:
-
a localizer; a tracker for communicating with said localizer and including three markers and a non-optical sensor; and a computing system having at least one processor configured to; determine positions of each of said markers based on optical and non-optical signals, determine if one or more of said markers is blocked from line-of-sight with said localizer to create a blocked condition, track a time of the blocked condition, determine a position error tolerance associated with the one or more blocked markers, determine a position error associated with the one or more blocked markers based on the time of the blocked condition, determine if the position error is within the position error tolerance, and place the navigation system in an error condition if the position error exceeds the position error tolerance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of tracking an object using a navigation system comprising a localizer, a tracker including three markers and a non-optical sensor, and a computing system having at least one processor, said method comprising the steps of:
-
determining positions of each of the markers based on optical and non-optical signals; determining if one or more of the markers is blocked from line-of-sight with the localizer to create a blocked condition; tracking a time of the blocked condition; determining a position error tolerance associated with the one or more blocked markers; determining a position error associated with the one or more blocked markers based on the time of the blocked condition; determining if the position error is within the position error tolerance; and placing the navigation system in an error condition if the position error exceeds the position error tolerance. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
Specification